The number of impacts a glazing assembly can withstand before penetration depends on the specific ASTM F3561 forced entry level being tested. The standard utilizes a structured sequence of initial impacts from a calibrated pendulum device to weaken the glass before tool-based penetration attempts begin.
According to the ASTM F3561 testing protocol, the required impacts for each level are as follows:
- Level 1: Requires 5 initial impacts and must provide 60 seconds of resistance.
- Level 2: Requires 7 initial impacts and must provide 120 seconds of resistance.
- Level 3: Requires 10 initial impacts and must provide 180 seconds of resistance.
- Level 4: Requires 15 initial impacts and must provide 300 seconds of resistance.
An assembly passes the test if it denies full penetration by the designated tools (such as screwdrivers, pry bars, or sledgehammers) for the entire duration of the level-specific resistance window after these impacts have been delivered.
Related FAQs
-
What is the Sequence of Testing for Astm F3561 Glazing Systems?
Read More »: What is the Sequence of Testing for Astm F3561 Glazing Systems?The ASTM F3561 testing protocol for glazing systems follows a structured three-phase sequence designed to simulate a persistent real-world attack. The sequence includes: This sequence is performed on a complete glazing assembly—including the frame, glass, anchoring hardware, and security film—to…
-
What are the Different Forced Entry Levels under Astm F3561?
Read More »: What are the Different Forced Entry Levels under Astm F3561?The ASTM F3561 standard establishes a dynamic, time-based framework for evaluating the forced entry resistance of glazing assemblies. The standard defines four distinct levels (and sometimes references a fifth), each representing a more determined and better-equipped attacker. These levels are…
-
What is the Warranty Period for 3m Commercial Security Film?
Read More »: What is the Warranty Period for 3m Commercial Security Film?The warranty period for 3M Scotchshield Ultra security film typically ranges from 10 to 15 years, depending on the specific application and product variant selected. This extended coverage offers several benefits to property owners: To maintain the integrity of the…
-
What are the Best One-way Privacy Security Films for Retail Storefronts?
Read More »: What are the Best One-way Privacy Security Films for Retail Storefronts?For retail storefronts, the most effective option is one-way mirror security film. This specialized product offers a dual benefit by balancing daytime confidentiality with robust physical protection. Key features of this film for retail applications include: Note that while these…
-
Is Astm F3561 the Modern Standard for School Security Glazing?
Read More »: Is Astm F3561 the Modern Standard for School Security Glazing?Yes, ASTM F3561 is considered the modern benchmark and framework for evaluating forced entry resistance, particularly in school security, commercial, and high-security applications. Unlike earlier standards (such as ASTM F588) that relied on static loads or simple impact counts, ASTM…